FIELD: metallurgy.
SUBSTANCE: steel with preset chemical composition and carbon content of 0.02-0.049 wt % is cast. Steel is teemed to produce slab to be hot-rolled and strip surface is water cooled to reel strip. Scale is removed from strip surface by etching to roll strip at continuous mill to produce 0.7-3.0 mm-thick strip to be heat-treated and temper-rolled. Temperature conditions of hot-rolling end and strip reeling are controlled. Hot-rolled strip thickness depending upon final thickness of cold-rolled strip is controlled by the following equation: 
where Hhr is thickness of hot-rolled strip, mm; HCR is final thickness of cold-rolled strip, mm.
EFFECT: mechanical properties complying with strength class 220, higher product yield.
1 ex, 2 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| PROCEDURE FOR MANUFACTURE OF COLD ROLLED STRIPS OF LOW ALLOYED STEEL OF 260 CLASS OF STRENGTH | 2010 |
|
RU2432404C1 |
| MANUFACTURING METHOD OF BROAD HOT-ROLLED STRIPS | 2007 |
|
RU2356657C2 |
| METHOD FOR PRODUCING OF SEMI-FINISHED HOT-ROLLED STOCK FOR MANUFACTURE OF ENAMELED ROLLED PRODUCTS | 2005 |
|
RU2305137C2 |
| MANUFACTURING METHOD OF HOT-GALVANISED ROLLED STOCK OF INCREASED STRENGTH | 2008 |
|
RU2361936C1 |
| HOT ROLLING METHOD OF LOW ALLOY STEEL IN CONTINUOUS WIDE STRIP ROLLING MILL WITH TWO GROUPS OF COILERS | 2005 |
|
RU2312720C2 |
| METHOD OF PRODUCTION OF COLD ROLLED METAL OF UPGRADED STRENGTH | 2007 |
|
RU2358025C1 |
| METHOD OF PRODUCTION OF 1,8-2,0 mm THICK SEMI-FINISHED HOT-ROLLED STEEL STRIP STOCK FOR ENAMEL COATING | 2009 |
|
RU2392335C1 |
| METHOD FOR HOT ROLLING OF LOW-ALLOYED STEEL | 2007 |
|
RU2365439C2 |
| MANUFACTURING METHOD OF HOT-ROLLED TUBE STEEL COILS | 2008 |
|
RU2373003C1 |
| METHOD OF PRODUCING COLD-ROLLED STOCK FOR WRAPPING STRAP | 2012 |
|
RU2499640C1 |
